I chose the GHL line because of the company approach to upgrade-ability and expansion. I'm now stuck between upgrading to a system that I don't need or holding on to an obsolete piece of equipment that will be discontinued. It's a shame that this is the choice GHL has chosen as I feel that a lot of loyal customers chose this brand/company because of the options it provides.
I will consider the P3 upgrade, but how long will I be without a controller if I am to send in my unit? The main purpose it serves is controlling my Tunzes, Ecotech, lights, topoff, and dosing. My lights I can control with timers, my Tunzes I'll likely run at full throttle, and my Ecotech I still have a stock controller for, but my topoff and dosing will need to be done manually until the upgrade is complete, so I wanted to get a better idea of what kind of timelines to expect.